Loose leaf binder



May 30, E938. P. o. UNGER ET AL LOOSE LEAF BINDER Filed Nov. 26, 1934 ATTORNE Y.

Patented May 10, 1938 r 2,116,989

UNITED STATES PATENT oFF c'E Paul 0. Unger, Glen Ellyn, and Fred D.Wedge, Lombard, 111., assignors to Wilson-Jones Company, Chicago, 111.,a corporationof Massachusetts Application November 26, 1934, SerialNo."754,'186

2 Claims. (01. 129-4) This invention relates to a loose leaf binder,rality of prong members 8. The prong members and more particularly to anarch binder in which meet at their outer ends .when the toggle platesfolded sheets or groups of sheets are retained by are in closed positionto form arches. A cover means of wires positioned between the foldedplate 9 is provided with downwardly bent edges edges of the sheets andthe underside of a plu- ID adapted to embrace the edges 1 of the springrality of arches. This type of binder is exempli back. The cover plate 9is notched along its lonfied by the patents to McCleary Nos. 1,843,575gitudinal edges, as indicated at H, to allow the and 1,843,608, bothissued February 2, 1932. prong members 8 to project therethrough. The

Binders of this type have proved to be very arc of the prong members hassubstantially the successful in connection with pamphlets or groups sameaxis and is parallel to that of the cover of folded sheets but the fieldof use therefor has plate when in closed position. I been limitedbecause the binder is not adapted to Each folded sheet I2 is providedwith a plureceive single unfolded sheets. It is often desirrality ofnotches I3 adapted to straddle the able to insert single unfolded indexor correction arches 8. A wire I4 is positioned inside the 5 sheets in abinder containing a plurality of pamfolded edge of the sheet and underthe arches to phlets or groups of folded sheets, but heretofore retainthe folded sheet in the binder just as in no binder of this type hasbeen available in which conventional binders of this type. Unfolded suchinsertions can be made without necessitat sheets l5 are punched andinserted on the arches ing so much effort as to make the binder impracjust as in the case of conventional ring books.

0 tical for the intended purpose. Of course, the folded sheets with thewires posi- It is an object of this invention .to provide a tionedadjacent the folded edge may also be inloose leaf binder adapted toretain a plurality of serted on the arches when they are in open sheetseither folded or unfolded. It is a further position. object of thisinvention to provide a loose leaf Apair of triggers I6 is provided atopposite ends binder particularly adapted to retain groups of of themetal to move the toggle plates to open and 25 folded sheets with meansfor permitting rap-id closed position. The specific structure of the andeasy insertion of single unfolded sheets. It trigger constitutes thesubject matter of a sepais a further object of this invention to providea rate application, Serial No. 750,446 filed October binder of this typewith a convenient accessible 29, 1934 in the name of Paul O. Unger,which ismagazine for carrying extra sheet retaining wires sued as PatentNo. 2,056,812 on October 6, 1936. that will not interfere with thenormal operation Accordingly, it is deemed to be unnecessary to deof thebinder, and will not detract from the apscribe the trigger structure indetail in the present pearance of the binder. Other objects of thisapplication. Any trigger capable of moving the inventionwill becomeapparent upon reading the toggle plates 6 to open and closed positionmay be ,5 following description taken in conjunction with used in thepresent structure. However, the trigthe accompanying drawing, in whichger must extend above the cover plate at least as Figure 1 is aperspective view of a loose leaf much as the arch members, in order toprevent binder embodying the invention with parts broken the accidentaldisplacement of the sheet retaining away to facilitate illustration ofthe structure. wires. The preferred embodiment of our invene Figure 2 isa fragmentary View, partly in plan tion is shown with a trigger at eachend. Howand partly in section, of the binder shown in Figever, it isobvious that a single trigger may be ure 1; and substituted, and one endof the metal may be Figure 3 is a cross sectional view taken alongprovided with any conventional closure that exthe line III-III of Figure2. tends above the cover plate enough to serve as In the drawing, thereference numerals 2, 3 and a stop member for the ends of the sheetretaining 45 4 respectively indicate a back member and a pair wires. ofcover members integral with the back member A tubular member I! issecured to the cover or secured to opposite edges thereof. A metalmember 4 near its outer edge to provide a magaspring back 5 is securedto the back member 2 in zine for carrying extra sheet retaining wiresi4.

any conventional manner. Two toggle plates 6 The magazine may be made ofany suitable ma- 50 are positioned in the spring back in side by sideterial. One end of the magazine is threaded, relation with their outerlongitudinal edges reas indicated at I8, Figure 2, and is provided withstrained from outward movement by the u a similarly threaded closuremember I9. The turned edges 1 of the spring back. outer end 20 of theclosure member I9 is prefer- Each toggle plate 6 has secured thereto apluably knurled to facilitate turning thereof. Al- 55 though themagazine may be secured to the cover member 4 in any desired manner, itis preferred to enclose it in a strip of fabric 2| and to secure theends 22 of the fabric strip under the lining member 23. If the covermember is not lined, the fabric strip may be sewed or cemented direct-1y to the cover member. It will readily be seen from an inspection ofFigure 3, that the magazine carrying the spare Wires cannot interferewith the normal operation of the binder.

Although we have described a preferred embodiment of our invention indetail, it will be understood that the description thereof isillustrative, rather than restrictive, as many details may be modifiedor changed without departing from the spirit or scope of our invention.Accordingly, we do not desire to be restricted to the exact constructiondescribed, except as limited by the appended claims.

We claim:

1. In a loose leaf binder, a plurality of sectional arch members, aplurality of folded sheets notched at their folded edges to straddlesaid arch members, a plurality of wires positioned within the foldededges of said sheets and under said arches to retain said folded sheetsin the binder, and means at each end of said binder to preventaccidental longitudinal displacement of said wires, said last mentionedmeans being op- I erable to open said sectional arch members.

